from random import random, randint

lst=[9,7,8,12,16,5,2,19,13,11]
for i in range(1,len(lst)):
    key=lst[i]
    j=i
    while j>0 and key>lst[j-1]:
        lst[j]=lst[j-1]
        j-=1
        lst[j]=key
print(lst)

print(list(range(7,2)))

a = {2,3,4}
b = {2,3,5}
print(b-a)

l = [randint(1,100) for i in range(10)]
print(sorted(l,reverse=False))
l.sort(reverse=True)
